ClipArt ETC
"Section through one of the central eyes of a young Limulus. L, Cuticular or corneous lens. hy, Epidermic cell-layer. corn, Its corneagen portion immediately underlying the lens. ret, Retinula cells. nf, Nerve fibers. con. tiss, Connective tissue (mesoblastic skeletal tissue)." — The Encyclopedia Britannica, 1910

Limulus

"Section through one of the central eyes of a young Limulus. L, Cuticular or corneous lens. hy, Epidermic…

"Development of the lateral eyes of a scorpion. h, Epidermic cell-layer; mes, mesoblastic connective tissue; n, nerves; II, III, IV, V, depressions of the epidermis in each of which a cuticular lens will be formed." — The Encyclopedia Britannica, 1910

Scorpion Eyes

"Development of the lateral eyes of a scorpion. h, Epidermic cell-layer; mes, mesoblastic connective…